==================================================================
BUG: KMSAN: uninit-value in slab_alloc_node mm/slub.c:2749 [inline]
BUG: KMSAN: uninit-value in kmem_cache_alloc_node+0x5d0/0xe70 mm/slub.c:2828
CPU: 1 PID: 11497 Comm: syz-fuzzer Not tainted 5.3.0-rc3+ #17
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x191/0x1f0 lib/dump_stack.c:113
 kmsan_report+0x162/0x2d0 mm/kmsan/kmsan_report.c:109
 __msan_warning+0x75/0xe0 mm/kmsan/kmsan_instr.c:294
 slab_alloc_node mm/slub.c:2749 [inline]
 kmem_cache_alloc_node+0x5d0/0xe70 mm/slub.c:2828
 __alloc_skb+0x215/0xa10 net/core/skbuff.c:197
 alloc_skb include/linux/skbuff.h:1056 [inline]
 new_skb drivers/block/aoe/aoecmd.c:67 [inline]
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x205/0xa80 drivers/block/aoe/aoecmd.c:1372
 discover_timer+0x86/0xa0 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x232/0x530 kernel/time/timer.c:1322
 expire_timers kernel/time/timer.c:1366 [inline]
 __run_timers+0xcdc/0x11a0 kernel/time/timer.c:1685
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1698
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x230/0x280 kernel/softirq.c:416
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:537
 smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1097
 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:835
 </IRQ>
RIP: 0010:pfn_valid include/linux/mmzone.h:1344 [inline]
RIP: 0010:my_virt_addr_valid mm/kmsan/kmsan.c:471 [inline]
RIP: 0010:virt_to_page_or_null+0x87/0x100 mm/kmsan/kmsan.c:476
Code: 32 48 89 d6 48 c1 ee 22 4c 8b 0c f1 4d 85 c9 74 25 48 89 d6 48 c1 ee 1b 83 e6 7f 48 c1 e6 05 4c 89 c9 48 01 f1 74 12 4c 8b 01 <41> f6 c0 02 75 0c 31 c0 c3 31 c0 c3 31 c0 c3 31 c0 c3 41 f6 c0 08
RSP: 0018:ffff8880b126f568 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 000000000f612b40 RBX: ffffffff902c1000 RCX: ffff88812fffb020
RDX: 000000000f612b40 RSI: 0000000000000020 RDI: ffffffff8f612b40
RBP: ffff8880b126f5a0 R08: ffffea000000000f R09: ffff88812fffb000
R10: 0000000000000000 R11: ffffffff8182bd40 R12: 0000000000000001
R13: ffffffff8f612b40 R14: ffffffff8f612b40 R15: 0000000000000004
 __msan_metadata_ptr_for_load_4+0x10/0x20 mm/kmsan/kmsan_instr.c:54
 raw_read_seqcount_latch include/linux/compiler.h:206 [inline]
 latch_tree_find include/linux/rbtree_latch.h:207 [inline]
 bpf_prog_kallsyms_find kernel/bpf/core.c:674 [inline]
 is_bpf_text_address+0xe7/0x4b0 kernel/bpf/core.c:709
 kernel_text_address kernel/extable.c:140 [inline]
 __kernel_text_address+0x24f/0x350 kernel/extable.c:95
 unwind_get_return_address+0x8c/0x130 arch/x86/kernel/unwind_frame.c:19
 arch_stack_walk+0x29a/0x3e0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x11c/0x1b0 kernel/stacktrace.c:123
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline]
 kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:345
 kmsan_memcpy_memmove_metadata+0x819/0xa80 mm/kmsan/kmsan.c:278
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:298
 __msan_memcpy+0x56/0x70 mm/kmsan/kmsan_instr.c:129
 sock_read_iter+0x47c/0x660 net/socket.c:968
 call_read_iter include/linux/fs.h:1864 [inline]
 new_sync_read fs/read_write.c:414 [inline]
 __vfs_read+0xa67/0xc90 fs/read_write.c:427
 vfs_read+0x359/0x6f0 fs/read_write.c:461
 ksys_read+0x265/0x430 fs/read_write.c:587
 __do_sys_read fs/read_write.c:597 [inline]
 __se_sys_read+0x92/0xb0 fs/read_write.c:595
 __x64_sys_read+0x4a/0x70 fs/read_write.c:595
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x47fcb4
Code: ff ff cc cc cc cc e8 2b 41 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 45 31 d2 45 31 c0 45 31 c9 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
RSP: 002b:000000c4203b9760 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4
RDX: 0000000000001000 RSI: 000000c4202e0000 RDI: 0000000000000003
RBP: 000000c4203b97b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000000008 R14: 0000000000000002 R15: ffffffffffffffff

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline]
 kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:345
 __msan_chain_origin+0x6b/0xe0 mm/kmsan/kmsan_instr.c:190
 ___slab_alloc+0x1dbc/0x1fb0 mm/slub.c:2634
 __slab_alloc mm/slub.c:2687 [inline]
 slab_alloc_node mm/slub.c:2750 [inline]
 kmem_cache_alloc_node+0x769/0xe70 mm/slub.c:2828
 __alloc_skb+0x215/0xa10 net/core/skbuff.c:197
 alloc_skb include/linux/skbuff.h:1056 [inline]
 new_skb drivers/block/aoe/aoecmd.c:67 [inline]
 aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:426 [inline]
 aoecmd_cfg+0x205/0xa80 drivers/block/aoe/aoecmd.c:1372
 discover_timer+0x86/0xa0 drivers/block/aoe/aoemain.c:24
 call_timer_fn+0x232/0x530 kernel/time/timer.c:1322
 expire_timers kernel/time/timer.c:1366 [inline]
 __run_timers+0xcdc/0x11a0 kernel/time/timer.c:1685
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1698
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x230/0x280 kernel/softirq.c:416
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:537
 smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1097
 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:835
 valid_section include/linux/mmzone.h:1280 [inline]
 pfn_valid include/linux/mmzone.h:1344 [inline]
 my_virt_addr_valid mm/kmsan/kmsan.c:471 [inline]
 virt_to_page_or_null+0x87/0x100 mm/kmsan/kmsan.c:476
 __msan_metadata_ptr_for_load_4+0x10/0x20 mm/kmsan/kmsan_instr.c:54
 raw_read_seqcount_latch include/linux/compiler.h:206 [inline]
 latch_tree_find include/linux/rbtree_latch.h:207 [inline]
 bpf_prog_kallsyms_find kernel/bpf/core.c:674 [inline]
 is_bpf_text_address+0xe7/0x4b0 kernel/bpf/core.c:709
 kernel_text_address kernel/extable.c:140 [inline]
 __kernel_text_address+0x24f/0x350 kernel/extable.c:95
 unwind_get_return_address+0x8c/0x130 arch/x86/kernel/unwind_frame.c:19
 arch_stack_walk+0x29a/0x3e0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x11c/0x1b0 kernel/stacktrace.c:123
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline]
 kmsan_internal_chain_origin+0xcc/0x150 mm/kmsan/kmsan.c:345
 kmsan_memcpy_memmove_metadata+0x819/0xa80 mm/kmsan/kmsan.c:278
 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:298
 __msan_memcpy+0x56/0x70 mm/kmsan/kmsan_instr.c:129
 sock_read_iter+0x47c/0x660 net/socket.c:968
 call_read_iter include/linux/fs.h:1864 [inline]
 new_sync_read fs/read_write.c:414 [inline]
 __vfs_read+0xa67/0xc90 fs/read_write.c:427
 vfs_read+0x359/0x6f0 fs/read_write.c:461
 ksys_read+0x265/0x430 fs/read_write.c:587
 __do_sys_read fs/read_write.c:597 [inline]
 __se_sys_read+0x92/0xb0 fs/read_write.c:595
 __x64_sys_read+0x4a/0x70 fs/read_write.c:595
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x63/0xe7

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:187 [inline]
 kmsan_internal_poison_shadow+0x53/0xa0 mm/kmsan/kmsan.c:146
 kmsan_slab_free+0x8d/0x100 mm/kmsan/kmsan_hooks.c:195
 slab_free_freelist_hook mm/slub.c:1472 [inline]
 slab_free mm/slub.c:3038 [inline]
 kmem_cache_free_bulk+0x3ad9/0x3f50 mm/slub.c:3163
 __kfree_skb_flush+0xb0/0x100 net/core/skbuff.c:862
 net_rx_action+0x1908/0x1950 net/core/dev.c:6436
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x230/0x280 kernel/softirq.c:416
 exiting_irq arch/x86/include/asm/apic.h:537 [inline]
 do_IRQ+0x20d/0x3a0 arch/x86/kernel/irq.c:259
 ret_from_intr+0x0/0x33
 native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
 arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
 kmsan_slab_alloc+0xd5/0x120 mm/kmsan/kmsan_hooks.c:178
 slab_alloc_node mm/slub.c:2790 [inline]
 kmem_cache_alloc_node+0x8f8/0xe70 mm/slub.c:2828
 __alloc_skb+0x215/0xa10 net/core/skbuff.c:197
 alloc_skb include/linux/skbuff.h:1056 [inline]
 __tcp_send_ack+0xfb/0x840 net/ipv4/tcp_output.c:3660
 tcp_send_ack+0x68/0x90 net/ipv4/tcp_output.c:3687
 tcp_cleanup_rbuf+0x764/0x800 net/ipv4/tcp.c:1562
 tcp_recvmsg+0x334d/0x4ff0 net/ipv4/tcp.c:2166
 inet_recvmsg+0x237/0x7d0 net/ipv4/af_inet.c:838
 sock_recvmsg_nosec net/socket.c:871 [inline]
 sock_recvmsg net/socket.c:889 [inline]
 sock_read_iter+0x5be/0x660 net/socket.c:967
 call_read_iter include/linux/fs.h:1864 [inline]
 new_sync_read fs/read_write.c:414 [inline]
 __vfs_read+0xa67/0xc90 fs/read_write.c:427
 vfs_read+0x359/0x6f0 fs/read_write.c:461
 ksys_read+0x265/0x430 fs/read_write.c:587
 __do_sys_read fs/read_write.c:597 [inline]
 __se_sys_read+0x92/0xb0 fs/read_write.c:595
 __x64_sys_read+0x4a/0x70 fs/read_write.c:595
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
==================================================================